PRS Resource ID Selection for Wireless Positioning Accuracy
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting and receiving positioning reference signals (PRS) due to unnecessary reference signal time difference measurements, which affect the accuracy of user equipment (UE) location determination and increase reporting overhead.
Innovation Solution
A method and apparatus for transmitting and receiving identifiers of specific positioning reference signal (PRS) resources and PRS resource sets based on positioning-related information, prioritizing PRS resources with high quality positioning information, such as transmission and reception time differences, to optimize PRS resource selection and reduce unnecessary measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all PRS resources are measured for positioning, then measurement completeness is improved, but measurement overhead and processing complexity increase
Solution Approach 1:
The patent extracts and identifies only the necessary PRS resources for positioning measurement by transmitting PRS resource information (IDs, transmission times, resource sets) from the network to the UE. This allows the UE to selectively measure only relevant PRS resources rather than all available resources, reducing measurement overhead while maintaining positioning accuracy.
Solution Approach 2:
The network performs preliminary action by pre-configuring and transmitting information about PRS resources (including transmission times, resource IDs, and resource set IDs) to the UE before positioning measurement. This advance information allows the UE to efficiently select and measure only the necessary PRS resources, avoiding unnecessary measurements and reducing processing complexity.
2Loss of information
If PRS resource information is transmitted for all resources, then positioning information completeness is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential PRS resource information needed for positioning (PRS resource ID, PRS resource set ID, transmission time) and transmits this selective information from the network to the UE. This approach provides sufficient positioning information completeness while minimizing signaling overhead by excluding unnecessary resource details.
3Measurement precision
If transmission times of multiple PRS resources are monitored, then positioning accuracy is improved, but time consumption increases
Solution Approach 1:
The network performs preliminary action by transmitting transmission time information for multiple PRS resources in advance to the UE. This allows the UE to efficiently monitor and measure only the PRS resources with relevant transmission times, improving positioning accuracy through multiple measurements while reducing the time required compared to sequential monitoring of all resources.
Data Source
AI summary
A method for an apparatus in a wireless communication system according to an embodiment comprises the steps of: receiving information on a transmission time point of a plurality of positioning reference signal (PRS) resources included in at least one PRS resource set; measuring information associated with positioning for each of the plurality of PRS resources, on the basis of the information on the transmission time point; and on the basis of the information associated with the positioning, transmitting at least one from among an identifier (ID) of a specific PRS resource of the plurality of PRS resources, or an ID of a PRS resource set including the specific PRS resource, and a transmission and reception point (TRP) ID associated with the PRS resource set including the specific PRS resource. The UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, the BS or a network.